964
FNCA52 TJSJ 101930
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 PM AST TUE MAR 10 2026
DISCUSSION
THE KBDI REMAINS ABOVE CRITICAL FIRE WEATHER THRESHOLDS IN CABO
ROJO (669) AND BELOW THRESHOLDS IN GUANICA (519) AND CAMP
SANTIAGO (383). BREEZY TO WINDY EASTERLY WINDS WILL CONTINUE
BETWEEN 14 TO 19 MPH WITH HIGHER GUSTS UP TO 30 MPH. TODAY, RH
VALUES WILL DROP NEAR AND BELOW CRITICAL LEVELS AT TIMES AS A
PATCH OF DRIER AIR FILTERS INTO THE AREA BY MID-MORNING. PASSING
SHOWERS WILL CONTINUE TO MOVE ACROSS THE AREA FROM TIME TO TIME;
HOWEVER, DRYING SOILS, LOWER HUMIDITY LATER IN THE DAY AND AND
STRONG WINDS WILL MAINTAIN A MODERATE FIRE DANGER RISK TODAY.
FROM
WEDNESDAY ONWARDS, WINDS ARE EXPECTED TO BECOME MORE LIGHT TO
MODERATE AND RH ARE EXPECTED INCREASE DUE TO THE ARRIVAL OF A
SURGE OF MOISTURE. AT THIS TIME AN RFD WILL NOT BE ISSUED. WE
URGE PARTNERS TO CONTINUE MONITORING UPDATES DURING THE MORNING
FOR A POSSIBLE ELEVATED FIRE DANGER RISK IF CONDITIONS WARRANT.
PRZ014-110800-
SOUTHEAST COASTAL PLAINS-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 0 30 10 30
TEMP (24H TREND) 70 (-2) 86 (0) 69 87
RH % (24H TREND) 84 (+1) 46 (-4) 82 46
WIND 20FT/EARLY(MPH) NE 13 E 18 NE 14 E 16
WIND 20FT/LATE(MPH) NE 11 E 19 NE 10 E 17
MIXING HGT(FT-AGL/MSL) 5650 5750
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 79100 80500
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ015-110800-
SOUTHERN HILLS-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 0 50 20 50
TEMP (24H TREND) 66 (-3) 82 (+1) 66 83
RH % (24H TREND) 90 (+4) 59 (-2) 89 59
WIND 20FT/EARLY(MPH) NE 13 E 13 NE 12 E 12
WIND 20FT/LATE(MPH) NE 12 E 14 NE 11 E 12
MIXING HGT(FT-AGL/MSL) 6440 6130
TRANSPORT WND (MPH) E 16 E 14
VENT RATE (KT-FT) 90160 73560
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ016-110800-
NORTH COASTAL PLAINS-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 50 40 40
TEMP (24H TREND) 69 (-2) 84 (-1) 69 85
RH % (24H TREND) 92 (+2) 62 (+1) 92 58
WIND 20FT/EARLY(MPH) E 19 E 14 E 18 E 13
WIND 20FT/LATE(MPH) E 16 E 20 E 13 E 18
MIXING HGT(FT-AGL/MSL) 5730 5500
TRANSPORT WND (MPH) E 18 E 16
VENT RATE (KT-FT) 91680 77000
DISPERSION 5 5
DSI 6 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ017-110800-
NORTHERN HILLS-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 50 20 50
TEMP (24H TREND) 67 (-2) 83 (-1) 65 84
RH % (24H TREND) 94 (+3) 61 (+1) 92 59
WIND 20FT/EARLY(MPH) E 18 E 14 E 17 E 12
WIND 20FT/LATE(MPH) E 13 E 18 E 11 E 16
MIXING HGT(FT-AGL/MSL) 6510 6390
TRANSPORT WND (MPH) E 15 E 13
VENT RATE (KT-FT) 84630 70290
DISPERSION 5 5
DSI 4 6 4 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ018-110800-
WEST COAST-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 20 80 40 60
TEMP (24H TREND) 67 (-3) 86 (-1) 66 86
RH % (24H TREND) 91 (+5) 58 (-1) 92 57
WIND 20FT/EARLY(MPH) E 20 E 13 E 19 E 12
WIND 20FT/LATE(MPH) E 19 E 14 E 14 E 11
MIXING HGT(FT-AGL/MSL) 5500 5460
TRANSPORT WND (MPH) E 10 E 8
VENT RATE (KT-FT) 49500 38220
DISPERSION 5 5
DSI 4 6 4 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ019-110800-
EASTERN INTERIOR-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 40 40
TEMP (24H TREND) 67 (-3) 83 (+1) 67 84
RH % (24H TREND) 91 (0) 62 (0) 90 59
WIND 20FT/EARLY(MPH) E 16 E 14 E 13 E 11
WIND 20FT/LATE(MPH) E 13 E 14 E 12 E 12
MIXING HGT(FT-AGL/MSL) 6140 6260
TRANSPORT WND (MPH) E 16 E 13
VENT RATE (KT-FT) 85960 68860
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ022-110800-
LUQUILLO MOUNTAIN RANGE-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 60 50 50
TEMP (24H TREND) 66 (-3) 79 (+1) 65 80
RH % (24H TREND) 97 (+5) 67 (-1) 95 65
WIND 20FT/EARLY(MPH) E 12 E 12 E 11 E 10
WIND 20FT/LATE(MPH) E 10 E 12 E 9 E 11
MIXING HGT(FT-AGL/MSL) 5060 4200
TRANSPORT WND (MPH) E 17 E 14
VENT RATE (KT-FT) 75900 50400
DISPERSION 5 5
DSI 5 6 5 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ023-110800-
CENTRAL MOUNTAIN RANGE-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 10 70 30 70
TEMP (24H TREND) 63 (-4) 81 (+2) 62 82
RH % (24H TREND) 94 (+3) 61 (-1) 94 61
WIND 20FT/EARLY(MPH) E 14 E 10 E 14 E 9
WIND 20FT/LATE(MPH) E 12 E 12 E 10 E 9
MIXING HGT(FT-AGL/MSL) 7750 6840
TRANSPORT WND (MPH) E 10 E 10
VENT RATE (KT-FT) 69750 61560
DISPERSION 5 5
DSI 2 6 2 5
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ024-110800-
CAYEY MOUNTAIN RANGE-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 50 30 40
TEMP (24H TREND) 66 (-2) 78 (0) 66 79
RH % (24H TREND) 94 (+1) 68 (+1) 93 65
WIND 20FT/EARLY(MPH) NE 11 E 12 NE 11 E 10
WIND 20FT/LATE(MPH) NE 9 E 12 NE 9 E 11
MIXING HGT(FT-AGL/MSL) 5330 5530
TRANSPORT WND (MPH) E 18 E 14
VENT RATE (KT-FT) 85280 66360
DISPERSION 5 5
DSI 3 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ025-110800-
VIEQUES-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY MCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60 50 50
TEMP (24H TREND) 72 (-2) 85 (0) 72 85
RH % (24H TREND) 84 (0) 57 (-2) 84 55
WIND 20FT/EARLY(MPH) E 19 E 18 E 17 E 13
WIND 20FT/LATE(MPH) E 18 E 17 E 16 E 13
MIXING HGT(FT-AGL/MSL) 3910 4040
TRANSPORT WND (MPH) E 22 E 17
VENT RATE (KT-FT) 74290 60600
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ026-110800-
CULEBRA-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 50 50 50
TEMP (24H TREND) 72 (-2) 85 (0) 71 86
RH % (24H TREND) 88 (+3) 57 (-4) 88 57
WIND 20FT/EARLY(MPH) E 19 E 17 E 17 E 13
WIND 20FT/LATE(MPH) E 18 E 17 E 14 E 12
MIXING HGT(FT-AGL/MSL) 4040 3680
TRANSPORT WND (MPH) E 22 E 17
VENT RATE (KT-FT) 76760 55200
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
PRZ027-110800-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 50 30 40
TEMP (24H TREND) 68 (-4) 87 (0) 67 88
RH % (24H TREND) 87 (+6) 49 (-1) 88 47
WIND 20FT/EARLY(MPH) E 17 E 18 E 13 E 14
WIND 20FT/LATE(MPH) E 16 E 21 E 13 E 17
MIXING HGT(FT-AGL/MSL) 5840 5840
TRANSPORT WND (MPH) E 15 E 14
VENT RATE (KT-FT) 75920 70080
DISPERSION 5 5
DSI 4 6 3 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ001-110800-
SAINT THOMAS AND SAINT JOHN-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 50 50
TEMP (24H TREND) 69 (-6) 83 (-1) 68 82
RH % (24H TREND) 94 (+10) 60 (-1) 98 61
WIND 20FT/EARLY(MPH) E 19 E 17 E 17 E 14
WIND 20FT/LATE(MPH) E 18 E 17 E 14 E 14
MIXING HGT(FT-AGL/MSL) 4170 3670
TRANSPORT WND (MPH) E 23 E 20
VENT RATE (KT-FT) 83400 62390
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
VIZ002-110800-
ST CROIX-
330 PM AST TUE MAR 10 2026
TONIGHT WED WED NIGHT THU
CLOUD COVER MCLEAR PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 30 30 30
TEMP (24H TREND) 71 (-4) 85 (0) 70 85
RH % (24H TREND) 88 (+7) 58 (-2) 90 56
WIND 20FT/EARLY(MPH) E 19 E 17 E 16 E 14
WIND 20FT/LATE(MPH) E 17 E 16 E 16 E 14
MIXING HGT(FT-AGL/MSL) 4460 4350
TRANSPORT WND (MPH) E 22 E 17
VENT RATE (KT-FT) 84740 65250
DISPERSION 5 5
DSI 6 6 6 6
RH RECOVERY EXCELLENT EXCELLENT
REMARKS...NONE.
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